---
id: object/pageextension/18089-in
type: object
title: Page extension 18089 "GST Purch. Credit Subform Ext" (IN)
summary: Page extension 18089 "GST Purch. Credit Subform Ext" (IN) in the IN country layer (Microsoft.Purchases.Document), extends "Purch. Cr. Memo Subform". Introduced in BC29, still in BC30.
tier: official
language: en
tags:
  - pageextension
  - in layer
versions:
  introduced: "29"
  last_changed: null
  deprecated: null
review:
  state: derived
  by: null
  at: null
  flags: []
generated:
  at: "2026-10-11T00:31:51.816Z"
  pipeline: 0.2.0
  prompts: {}
  input_hash: c575ea17933a3efae63a302235fe6f2a168085d21dbe515d0e8c50430d04296c
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/IN/INGST/app/GSTPurchase/src/PageExtension/GSTPurchCreditSubformExt.PageExt.al
    title: src/Apps/IN/INGST/app/GSTPurchase/src/PageExtension/GSTPurchCreditSubformExt.PageExt.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
  learn: []
  objects: []
  features: []
  topics: []
  localizations:
    - localization/in
  videos: []
  posts: []
  guidelines: []
object_type: pageextension
object_id: 18089
name: GST Purch. Credit Subform Ext
namespace: Microsoft.Purchases.Document
app: INGST
extends: Purch. Cr. Memo Subform
first_version: "29"
last_version: "30"
present_in:
  - "29"
  - "30"
changed_in: []
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
country: IN
counts:
  fields: 0
  procedures: 2
  events: 0
  subscribers: 0
  controls: 16
  actions: 0
relations:
  out: 0
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 0
---

# Page extension 18089 "GST Purch. Credit Subform Ext" (IN)

> Page extension 18089 "GST Purch. Credit Subform Ext" (IN) in the IN country layer (Microsoft.Purchases.Document), extends "Purch. Cr. Memo Subform". Introduced in BC29, still in BC30.

IN country layer · Microsoft.Purchases.Document · BC29-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/IN/INGST/app/GSTPurchase/src/PageExtension/GSTPurchCreditSubformExt.PageExt.al) · facts from BC29

An object of the [IN localization](../../localizations/in.md), not part of W1.

## Fields on this page

Layout controls in source order, grouped by the container they sit in. Shows: the table field a control is bound to (or its expression as written); ToolTip: the control's own, else the bound field's (marked).

| Group | Control | Shows | ToolTip |
|---|---|---|---|
| modify(No.) | No. | modifies `No.` | — |
| modify(Item Reference No.) | Item Reference No. | modifies `Item Reference No.` | — |
| modify(Quantity) | Quantity | modifies `Quantity` | — |
| modify(Line Amount) | Line Amount | modifies `Line Amount` | — |
| modify(Line Discount %) | Line Discount % | modifies `Line Discount %` | — |
| modify(Location Code) | Location Code | modifies `Location Code` | — |
| modify(Type) | Type | modifies `Type` | — |
| addafter(Qty. to Assign) | GST Group Code | `Rec."GST Group Code"` | Specifies an identifier for the GST group used to calculate and post GST. |
|  | HSN/SAC Code | `Rec."HSN/SAC Code"` | Specifies the HSN/SAC code for the calculation of GST on Purchase line. |
|  | GST Group Type | `Rec."GST Group Type"` | Specifies if the GST group is assigned for goods or service. |
|  | Exempted | `Rec.Exempted` | Specifies whether the transaction is exempted from GST or not. |
|  | GST Jurisdiction Type | `Rec."GST Jurisdiction Type"` | Specifies the type related to GST jurisdiction. For example, interstate/intrastate. |
|  | GST Credit | `Rec."GST Credit"` | Specifies if the GST credit has to be availed or not. |
|  | GST Assessable Value | `Rec."GST Assessable Value"` | Specifies the assessable value on which GST will be calculated in case of import purchase. |
|  | Custom Duty Amount | `Rec."Custom Duty Amount"` | Specifies the custom duty for calculation of GST in case of import purchase. |
| addafter(Line Discount %) | FOC | `Rec.FOC` | Specifies if FOC is applicable on Current Line. |

## Procedures

2 local procedures, no public ones.

## Triggers

OnAfterGetCurrRecord

## Across versions

- Present in: BC29-30
- Changed (declaration) in: none

Source: AL metadata extracted from the code (names, ids, signatures, properties); no code bodies (D10).

## Ask your agent

Procedure bodies are not stored here (D10). For a procedure body or the calls of one procedure, ask bc-code-atlas (external, by Stefan Maron, MIT; default corpus w1-28), which the bc-observatory plugin connects: `bcatlas_resolve_node(object_type: "pageextension", object_name: "GST Purch. Credit Subform Ext")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.

A IN country object, not part of W1: the default corpus does not have it; `bcatlas_list_countries` shows which countries the atlas has.